Machine for wrapping packages



Jan. 5. 1,522,945

w. H. DAY

MACHINE FOR WRAPPING PACKAGES Filed g- 28, 1922 9 Sheets-Sheet l I NVENTOR wzlwmal ymrdf i' AEiowney.

Jan, 13, 1925.

1,522,945 w. H. DAY

MACHINE FOR WRAPPING PACKAGES Fil Aug. 28, 1922 9 Sheets-Sheet 2 INVENTCR.

1,522,945 w. H. DAY

A MACHINE FOR WRAPPING PACKAGES Filed Aug. 28, 1922 9 Sheets-Spam; 5

INVENTQR y 4 wx tome Jan. 1925- 1,522,945

' w. H. DAY

MACHINE FOR WRAPPING PACKAGES Filed A g- 28, 1 9 Sheets-Sheet 4 lmvamoa Attorney W. H. DAY

MACHINE FOR WRAPPING PACKAGES F l ug- 28, 1922 9 Sheets-Sheet 5 in WMM Attornqy.

Jan. 13, 1925. 1,522,945

W. H. DAY

MACHINE FOR WRAPPING PACKAGES Filed Aug 28, 1922. 9 Sheets-Sheet s ll. H

INvEmoR %m m Attorney.

. 1,522,945 W. H; DAY

MACHINE FOR WRAPPING PACKAGES Filed Aug. 1922' 9 Sheets-Sheet 7 ENVENTOR I Attmney.

w. H. DAY

MACHINE FOR WRAPPING PACKAGES Filed Aug. 28, 1922 9 Sheets-Sheet 8 INVENTOR mmmw 0 m1} M M ttornev.

Jan. 13, 1925- 1,522,945

W. H. DAY

MACHINE FOR WRAPPING PACKAGES Filed 28, 1922 9 Sheets-Sheet 9 Invmwon W D- IM Attorney Patented Jan. 13, 1925.

PATENT OFFICE.

\VILLIAM H. DAY, OF HOUNSLOXV ENGLAND.

lVlIACI-IINE FOR WRAPPING PACKAGES.

Application filed August 28, 1922. Serial No. 584,878.

To all whom it may concern:

Be it known that I, \VILLIAM HARPER DAY, a subject of the King of Great Britain and Ireland, residing at the Novelty lVorks, Ivy Road, Hounslow, Middlesex, England, have invented new and useful Improvements in Machines for lVrapping Packages, on which application has been made for Letters Patent in Great Britain, No. 24657, filed 16th September, 1921, of which the following is a specification.

The present invention relates to improve ments in those wrapping machines designed for the purpose of wrapping such articles as soap-tablets, cubes of laundry-blue, meat jelly, caramels, chocolates and other foodstuffs and for wrapping rectangular packages, tins, cardboard cartons and the like, and particularly in a wrapping machine designed for those purposes in which a frame is provided with a wrapping well with yielding walls, over the mouth of which well, a web of paper is fed from which a sheet of paper is out which is wrapped around an article by wrapping blades during the action of depressing said article through the well by a plunger. In this machine the article to be wrapped is fed forward by a feeding member through a guiding channel and deposited upon the sheet of paper in the mouth of the well after the same has been severed from the web by a cutting knife actuated at the desired moment. The article to be wrapped is depressed into the well by the head of a plunger lever actuated from the main cam shaft. This plunger co-acts with a horizontally movable folding blade. In turn this horizontally movable folding blade co-acts with a second horizontally movable folding blade having openings in the edge thereof and means fastened to and project ing in advance of the plunger head for supporting the following article to be wrapped in the well, and top folding blades movable through the openings in the second horizontally disposed blade edge. After the paper has been wrapped around the article in the well by the said blades" it isejected from the well by means of a, horizontally sliding member adapted to be moved across the bottom of the well.

The above parts are driven from the main driving shaft by means of cam mechanism and are adjusted to act at predetermined articles moments to complete the cycle of operations in the desired sequence.

It was proposed to use a hopper into which the articles to be wrapped are fed through the medium of the inclined chute upon a combined supporting plate and feeding member by which the articles are deposited one by one on to the paper in the mouth of the wrapping well.

The present invention comprises various improvements in the above machine.

According to the present invention the are continuously fed forward through a guiding channel by an endless band driven from the main shaft of the machine to a position registering with the feeding member which moves said articles off the band into the mouth of the wrapping well. In order to allow of the machine being employed for tablets of different lengths the walls of the channels through which the tablets are. passed are made adjustable. Similarly the paper roller supports and paper guides are capable of adjustment so .as to take the paper webs of varying widths according to the dimensions of the article to be wrapped in the well. Instead of a pair of feeding rollers on the cam shaft co-act ing with an under roller adapted to intermittently engage the paper web, I employ a pair of co-acting rollers mounted in close proximity to the cutting knife and driven intermittently from the cam shaft through pawl and ratchet gearing. These feeding rollers are adapted to have a continuous grip on the paper whether stationary or rotating. I employ a stiff cutting knife with a cutting edge adapted to co-act by a scissors action with a cutting edge on the framework of the machine over which the web of paper passes in its passage to the mouth of the wrapping well. In order to facilitate their adjustment, the top end folders are yoked together and adapted to be actuated from a single cam on the cam shaft through a lever arm arranged on the top of the machine. These top end folders come into action with a downward movement against the influence of compression springs. In order to prevent the paper from being crumpled cxperience has shown that it is desirable to fold one of the projecting side flaps of paper over the end of the article in the well before the other flap is folded. To provide for this movement the cam slots are so positioned upon the disc that one folding blade is moved forward to its full extent before the other blade is actuated which blade comes forward over the end of the article to be wrapped as the first blade retires.

The invention is illustrated by way of example in the accompanying drawings, in which Figure 1 shows a side elevation of the left hand side of the machine.

Figure 2 shows a plan view of Figure 1.

Figure 3 shows a front elevation taken on the left hand side of Figure 1.

Figure lshows in side elevation a detail view of thetop plungerand paper feeding mechanism.

Figure 5 shows a front elevation of Figure 1.

Figure 6 shows in side elevation a detail view of the top end folding mechanism.

Figure 7 shows a front elevation of F igure 6.

.Figure 8 shows in side elevation a detail view of the knife mechanism.

Figure 9 shows a front elevation of Figure'8.

Figure 10 shows a plan View of the fixed bottom blade and knife bracket.

Figure 11 shows in side elevation a detail view of the back top folder mechanism.

Figure 12 shows in side elevation a detail View of the front top folder and plunger mechanism.

Figure 13 shows aplan view of the mechanism shown in Figures 11 and 12 combined looking in the direction of the arrows on these figures. I

Figure 14 shows in front elevation a detail view of the front top folder.

Figure 15 shows a detail end View of the article to be wrapped being pressed down into the well by the top plunger.

Figure 16 shows a detail view of the article to be wrapped with the back top folder in operation.

Figure 17 shows a detail end view of the article to be wrapped with the front top folder in operation.

Figure 18 shows a detail front view of the article to be wrapped with the top end folders in operation.

Figure'19 shows a detail plan view of the article to be wrapped during the first operation of the side end folders.

Figure 20 shows a detail front view of the article tobe wrapped during the second operation of the side end folders and Figure 21 shows a detail front view of the wrapped article in the well with the flaps held in position by the end springs.

As shown in Figures 1, 2 and 3 of the drawings the machine is driven from a con venient source of power by a pulley 302 secured to the main shaft 3, the articles to be wrapped are continuously fed forward through a guiding channel from the tablet plate board 1 secured to the framework A of the machine by an endless band 2. A combined flywheel and pulley 303 is mounted on the main cam shaft 3 and can be coupled thereto by clutch mechanism controlled by a hand lever 304. A belt 4 passes over guide pulleys 305 and over a pulley mounted on the counter-shaft 5thus rotating the pulley 306 and driving the endless band 2. Tension is maintained in the band 2 by a jockey pulley 307 carried by a pivoted arm 308 acted'on by a spring 309. The articles tobe wrapped are carried respectively by the belt to a position in which they register in turn with a feeding member 7 8 7 shown in detail in Figures 12 and 13 adapted to move the articles to be wrapped off the bandinto the mouth of the wrapping well.

the walls of all the channels through which the articles are passed are made adjustable. The folder members are also adjustable.

In Figure 7 I illustrate in detail the wrapping well provided with yielding springs 6 adapted to engage the ends of the tablets. These springs are mounted on brackets 7 adapted to be adjusted through the nuts 8 by the adjusting shaft 9. whichshaft is turned by the hand wheel 10. In this way the walls of the wrapping well are adjusted to the length of the tablet to be wrapped. The paper holder 110 is carried on supports 111 on the machine framework A and has cheeks 112 supported 011 brackets 113 controlled by right and left hand screws operated by a hand wheel 11 as shown more particularly in Figures 2 and 3, so as to take a paper web of varying widths according In order to allow .of the machine be ing employed for tablets of different lengths to the dimensions of the articles tobe influence of the cam 13 .is opposed by the spring 16.

In the machine herein first described a pair of feeding rollers mounted on the cam shaft co-acted with an under roller adapted to intermittently engage the paper web. According to the machine forming the pres ent invention I employ feeding rollers mounted in close proximity to the cutting knife and driven intermittently from the main cam shaft 3 through ratchet gearing.

These feeding rollers 17 areadapted to have a contiiiuoiisgrip on'the paper whetliertlie'y are stati'onaryfor 'rot'ating." 4 and'5 Ishow by way of example a ratchet feeding 'i1iechanis1nf0r intermittently ineving the feeding rollers from the"eain shaft 3. A crank disc 18 mounted 1onthes1iaft-5 is coupled through the'liiik 1 9 with an adjustable lever 20 l'oosely in'oiihted on the spindle 2l 'of the ratchet wlieel-22.' The said 'lever 20 is provided with apawl 23 adapted to ea-gage the ratchet wheel 22, and to drive through s'aidwheel the spindle 21 and the gear wheel 2 L keyed thereon and through said wheel 24l the p'inions25n1ount ed on the spindles of the feeding rollers 17. In this manner the "rotation at the crank disc on'the cam shaft 3 givesan "i'nterinit tent movement to the "feeding mllers' lT through the said pawl and ratchet The/"chanisin. The said feeding "rollers 17"" a-re adapted to have a continuousgripon the web of paper whether they are stationary or rotating. i

I employ a stiff cutting knife withacutting edge" adapted to co act -by a scissors action witha cutting edge"2 66 on the frame work of the machine over which the webs-tpaper 'p a'ssfe s' in *its passage to the iiitiuthi of the wrapping well.

In Figures 8, sand I illustrate asuitable fniecliani'sm for operating the lilii'fe. The knife blade 26 'is p'iviotally niouiitedin the vertical slot 277 in thebracket* 27Taiid is adapted to be aotiuitd thro'iigh "the "connecting link 28 and rocker 29 by the cam 30 mounted on the main shaft 3 at the back of the cam actuating the front top foldin g mechanism hereinafter described. The knife blade 26 is =i-en1rnectiion1"the ct'ftting po'siti'on by means ofthe spring 321iioii-iited behind the knife bracket 27 and connected with the knifethroughthe pin 33 which projects from the knife blade throughthe slot 34cut "from thebr'acket 271 This slot is so shaped as to give the desire'chturn-ing movement to the point of thedinife (blade when the knife ispull'e'd do'wn' against the influence of the'spring 32' bytliehain'30"en gaging the roller 300 at the/free end of the rocker 29. i

In order to facilitate their adjustment the top end folders are yo'l'ied'togetherand adapted to be actuated from single 'ca'ni on the cam shaft through a lever-arm arran e-1 on the top of the machine- Tlie'setopend folders" come into action with a ate-Ward movement against the infiuence 'of ct'inipression springs. This methanismiis "illustrated by way of examplein F igures 6 and 7: The main shaft'3 -is "p'rovidectwith a' cam-"eLO adapted to actuate through the roller'A-Ia crank lever "arm 42 thefr'ee end of wliich connected through a' shackle lgwith a sh'af-t 44 which form's a yoke supporting the top endfolders 45. This 'yoking shaft M; is supthesprings 148; The yoke shaft '44 with the top eiid foldersetfi ispressedllhuuiii'ards liy the mm against the influence of the spii iigs 48 and these spfings r'etiirn the "yoke shaft to the raised position when said tshaft'is released by the ca'nii The 'top the folders 'ai e-"slidably' iiioiinted'on the "saithsliaft l i La'nd a1"ef "-"capable"of tad justi hei it by" the enema 'adjiisting shaft 4:9 which shaft is aaa asa to' betiiriiedby the when 50. l The to g'ive 'the folding"blades-this movement towards each other at the desired moment.

In} order *to revent thepapr from' being crumpled; experience has shown that it is des1rable-t'o fold 'oneof the "proje cting side in the" well before" the other fiapis folded.

Tdpi'ovideTor thismovement the cam slots "are so 'fo'fnied "in the "disc tliat' one 'ftilding blade is waived forward to its full extent before the other blade isacttiated, which 'blat le ee'nfes forward ever the end of the ar- A suitable side folding mechanism is illusti"at'ecl by "way of example i11" Figiires' 6 and 7. Fllie-niain Zia-m shaft-'3" is provided with cam ='5'3-adapted "to engage a 1 roller inounted" at t'he extremity ofa "crankf'arni 5% mounted-on the rdtatable shaft 544 adapted to actuate" through the second crank at-11f against the influence of spring 56, i the "links 57 respectively connected by "means of a liiikFS SKYvitli a disd 59. "Each of these discs is pi ovided with oppositely arran ged tan-1 slots adapted to be engagechby theFiollers projecting from the arms 60 carrying the sidekndfblders 61. AssliowifinFiguI'e 6 "a slot 62 on the lefthand side Ofthe disc is a plain slot and'isadap'ted to'give a plain backward and forward movement to the ana and folder nieihber 61in en age ine'nt tlierewith. The opposite cam slot 63 (shown in I Figure 6 in dotted lines) is so Sl1a-ped""a's to retard the iii'ovenient of its folder and is "provided "with'a check 64 projeting from 'th'e flap 1 lever 65 pivoted to 'that side o'f tlie disc. 1 This cli'eelz men'lb'er is adapted to'pro't' idethat thef'ol'det 61 onthe righthaiid sidedf thedisc 'is so inoved in relation to the'folder on the "left hand side of the disc when the latter folding blade is moved forward to its full extent before the other blade is actuated, which blade then comes forward over the edge of the article to be wrapped as the first blade retires. This movement prevents the paper from being crumpled during this folding process.

In Figures 11, 12 and 13 the back top folder and front top folder and plunger mechanism is illustrated. A cam 66 is mounted on the main cam shaft 3 adapted to engage the roller 67 on the lever 68 connected through the operating stud 70 with the strip 71 attached to the back top folder 711. This back top folder 711 is adapted to be actuated against the influence of the spring 69 hooked to said member in unison with the front top folder operated by the cam 72 through the roller 7 3 and lever 74 connected through the operating stud 75 with the strip 76 in one with the front top folder 77. The said front top folder is adapted to carry the member 78 adapted to feed the tablets off the endless band into position over the mouth of the wrapping well.

The wrapped articles are fed from the well on to the table 81 and from thence through the exit in the front plate of the machine. This plunger 80 is slidably guided on the framework A by means of bolts 801 whichare fixed in the framework and which pass through slots cut in the rear end of the plunger. The plunger is returned by the above mentioned spring 56 which controls the lever mechanism rocking the discs 59 which actuate the end folders 61.

The wrapping operations are illustrated in detail in Figures 15 to 21. In Figure 15 the article to be wrapped is shown being pressed down into the well over the paper between the yielding springs 6 by the top plunger 12. In Figure 16 the back top folder 711 is shown in the forward position and in Figure 17 the back top folder is shown again in the receded position and the front top folder 7 7 is shown in the forward position. In this position the top flaps of paper have been folded over each other; It should be understood that Figures 15, 16 and 17 are end views of the articles being wrapped in the well.

Figure 18 shows a front view of the top end folders in the operating position. These folders come into action after the wrapping operations shown in Figures 16 and 17 are completed. Figure 19 shows in' plan view the first operation of the side end folders 61 after the top end folders have receded." Figure 20 shows the second opera tion of the side end folders 61.

Each article pressed into the well by the top plunger 12 pushes the wrapped article beneath it downwards when the yielding springs 6 turn up the pointed end flaps and complete the wrapping as shown in Figure 21. The completely wrapped article finally reaches the table 81 where it is fed by the plunger 80 through the exit in the front plate of the machine.

described herein, adjustable end walls for 7 each channel through which the packages pass after leaving the hand, an adjustable paper holder'for carrying paper webs of varying widths according to the dimensions of the package to be wrapped, and right and left handed screw means for adjusting said channels and said paper holders 3. In a wrapping machine of the class described herein, the combination with an endless feed belt of an adjustable guide way, right and left handed screw 'means for adjusting the guide way according to the length of the package to be wrapped,and a member on the front horizontally disposed top folding member adapted to push the packages of said feed belt through said guide way into position over the wrapping well. 7 r

4. In a wrapping machine of the class described herein, a pair of guide rods, bearings in which said guide rods work, springs on said guide rods, a yoking shaft supported at its ends 011 said guide rods, a pair of top end folders mounted on said yoking shaft, right and left hand screw means for simultaneously and symmetrically adjusting said folders, a single lever arm, and a single cam opera-ting said folders through said lever arm and yoking shaft. I

5. I11 a wrapping machine of the class described herein, brackets for carrying the" side end folders, right and left handed screw means for simultaneously and symmetrical,- ly adjusting said brackets, cam means for operating said folders so that one folding blade at each end of the package moves forward to its fullest extent before the second blade is actuated, which blade comes forward over the end of the package as the first blade retires. 1 V

6. In a wrapping machine of the class described herein, brackets for carrying the yielding side walls of the Wrapping Welland the side end folders, and right and left hand ed screw means for simultaneously andsymmetrically adjusting said brackets, and-cam means for operating said folders so that one folding blade at each end of the package moves forward to its fullest extent before the second blade is actuated, which blade comes forward over the end of the package as the first blade retires.

7. In a wrapping machine of the class described herein, brackets for carrying the yielding side walls of the wrapping Well, ide end folders on said brackets, right and left handed screw means for simultaneously and symmetrically adjusting said brackets, a disc revolubly mounted on each of said brackets having a plain cam slot adapted to give a plain back and forward movement to one folder member and a cam slot and check member projecting from a flap lever pivoted to the side of the disc adapted to retard and check the second folder member in relation to the first folder member so that the first folder member is moved forward to its full extent before the checked folder member acts, and means for oscillating said disc.

In testimony whereof I have signed my name to this specification.

WILLIAM H. DAY. 

